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1619967-08-6

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1619967-08-6 Usage

General Description

5,5'-dibromo-3,3'-difluoro-2,2'-bithiophene is a chemical compound that belongs to the bithiophene family, which is commonly used in organic electronic devices such as organic light-emitting diodes (OLEDs), photovoltaic cells, and organic field-effect transistors. 5,5'-dibromo-3,3'-difluoro-2,2'-bithiophene is a derivative of bithiophene, which is a heterocyclic compound containing two thiophene rings. Its chemical structure consists of two bromine atoms and two fluorine atoms attached to the bithiophene core. The unique combination of bromine and fluorine atoms in this compound makes it useful for various applications in the field of organic electronics and materials science. Its properties make it an attractive candidate for further research and development in the design and synthesis of novel organic electronic materials.

Check Digit Verification of cas no

The CAS Registry Mumber 1619967-08-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,9,9,6 and 7 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1619967-08:
(9*1)+(8*6)+(7*1)+(6*9)+(5*9)+(4*6)+(3*7)+(2*0)+(1*8)=216
216 % 10 = 6
So 1619967-08-6 is a valid CAS Registry Number.

1619967-08-6Relevant articles and documents

Implication of Fluorine Atom on Electronic Properties, Ordering Structures, and Photovoltaic Performance in Naphthobisthiadiazole-Based Semiconducting Polymers

Kawashima, Kazuaki,Fukuhara, Tomohiro,Suda, Yousuke,Suzuki, Yasuhito,Koganezawa, Tomoyuki,Yoshida, Hiroyuki,Ohkita, Hideo,Osaka, Itaru,Takimiya, Kazuo

, p. 10265 - 10275 (2016)

The development of semiconducting polymers is imperative to improve the performance of polymer-based solar cells (PSCs). In this study, new semiconducting polymers based on naphtho[1,2-c:5,6-c′]bis[1,2,5]thiadiazole (NTz), PNTz4TF2 and PNTz4TF4, having 3,3′-difluoro-2,2′-bithiophene and 3,3′,4,4′-tetrafluoro-2,2′-bithiophene, respectively, are designed and synthesized. These polymers possess a deeper HOMO energy level than their counterpart, PNTz4T, which results in higher open-circuit voltages in solar cells. This concequently reduces the photon energy loss that is one of the most important issues surrounding PSCs. The PNTz4TF4 cell exhibits up to 6.5% power conversion efficiency (PCE), whereas the PNTz4TF2 cell demonstrates outstanding device performance with as high as 10.5% PCE, which is quite high for PSCs. We further discuss the performances of the PSCs based on these polymers by correlating the charge generation and recombination dynamics with the polymer structure and ordering structure. We believe that the results provide new insights into the design of semiconducting polymers and that there is still much room for improvement of PSC efficiency.

Pd-Catalyzed Aerobic Oxidative Coupling of Thiophenes: Synergistic Benefits of Phenanthroline Dione and a Cu Cocatalyst

Tereniak, Stephen J.,Bruns, David L.,Stahl, Shannon S.

supporting information, p. 20318 - 20323 (2020/12/01)

Substituted bithiophenes are prominent fragments in functional organic materials, and they are ideally prepared via direct oxidative C-H/C-H coupling. Here, we report a novel PdII catalyst system, employing 1,10-phenanthroline-5,6-dione (phd) as the ancillary ligand, that enables aerobic oxidative homocoupling of 2-bromothiophenes and other related heterocycles. These observations represent the first use of phd to support Pd-catalyzed aerobic oxidation. The reaction also benefits from a Cu(OAc)2 cocatalyst, and mechanistic studies show that Cu promotes C-C coupling, implicating a role for CuII different from its conventional contribution to reoxidation of the Pd catalyst.

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